Index: releases-1.6.3/tests/_util.py
===================================================================
--- releases-1.6.3.orig/tests/_util.py
+++ releases-1.6.3/tests/_util.py
@@ -1,7 +1,7 @@
 from docutils.nodes import (
     list_item, paragraph,
 )
-from mock import Mock
+from unittest.mock import Mock
 import six
 
 from releases import (